642461321224 has 16 divisors (see below), whose sum is σ = 1225032181200. Its totient is φ = 315786072912.

The previous prime is 642461321197. The next prime is 642461321263. The reversal of 642461321224 is 422123164246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680572962 + ... + 680573905.

It is an arithmetic number, because the mean of its divisors is an integer number (76564511325).

Almost surely, 2^642461321224 is an apocalyptic number.

It is an amenable number.

642461321224 is a deficient number, since it is larger than the sum of its proper divisors (582570859976).

642461321224 is a wasteful number, since it uses less digits than its factorization.

642461321224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361146932 (or 1361146928 counting only the distinct ones).

The product of its digits is 110592, while the sum is 37.

The spelling of 642461321224 in words is "six hundred forty-two billion, four hundred sixty-one million, three hundred twenty-one thousand, two hundred twenty-four".